Ingredient review
PEG-20 Dilaurate
INCI: PEG-20 Dilaurate
PEG-20 Dilaurate is a safe, widely used emulsifier that helps mix water and oil in skincare products, but its PEG component raises minor purity concerns for sensitive skin.
In plain English
PEG-20 Dilaurate is a synthetic ingredient that acts like a bridge between water and oil. In your moisturizer or cleanser, it stops the formula from separating into watery and oily layers, so you get a smooth, consistent texture every time you use it. It's part of the PEG family, which are compounds made from petroleum that are processed to be gentle on skin.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-20 Dilaurate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging PEG-20 Dilaurate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
PEG-20 Dilaurate is a polyethylene glycol (PEG) derivative combined with lauric acid (a fatty acid from coconut or palm oil). The '20' refers to the number of ethylene glycol units, which determines its water-loving properties. It is a waxy solid or liquid at room temperature and is used primarily to stabilize emulsions.
How it works
In a cosmetic formula, PEG-20 Dilaurate sits at the boundary between water droplets and oil droplets. Its water-loving (hydrophilic) end dissolves in water, while its oil-loving (lipophilic) end dissolves in oil. This reduces surface tension, allowing the two normally unmixable liquids to form a stable, creamy emulsion that doesn't separate.
Pros
Effective emulsifier
PEG-20 Dilaurate reliably blends oil and water, giving creams and lotions a smooth, uniform texture that doesn't separate over time.
Low irritation potential
At typical use levels, it is considered non-irritating and non-sensitizing for most skin types, making it suitable for daily-use products.
Cons and cautions
PEG purity concerns
PEG compounds can be contaminated with manufacturing byproducts like 1,4-dioxane, a potential carcinogen. However, reputable brands use purified grades that meet safety standards.
Not natural
It is a fully synthetic ingredient derived from petroleum, which may not appeal to those seeking natural or organic skincare.
Best for
- People who use standard moisturizers, cleansers, or makeup removers
- Those looking for stable, non-separating formulas
Use caution if
- Individuals with known sensitivity to PEG compounds or very reactive skin
- Those seeking 100% natural or petroleum-free skincare routines
Usage tips
Safety summary
PEG-20 Dilaurate is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with ethylene oxide or 1,4-dioxane during manufacturing, but high-quality suppliers remove these impurities. It has low skin irritation and allergy risk for most people.
Research notes
The Cosmetic Ingredient Review (CIR) panel has evaluated PEG compounds and concluded they are safe in cosmetics when formulated to be non-irritating. No specific studies on PEG-20 Dilaurate alone were found, but its chemical class is well-studied and considered low-risk.
Common label clues
- Typical concentration
- Typically 0.5% to 5% of a formula
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database. The Cosmetic Ingredient Review (CIR) panel has reviewed PEG compounds and found them safe at typical concentrations when properly purified.
- Common uses
- Cleansers, Lotions, Creams, Makeup removers
- Environmental note
- PEG compounds are not readily biodegradable and can persist in water systems. However, they are used in low concentrations and wastewater treatment can reduce their impact.
Good to know
- PEG-20 Dilaurate is often used in combination with other emulsifiers to fine-tune texture and stability.
- The lauric acid portion comes from coconut or palm oil, but the final ingredient is still classified as synthetic.
Common questions
What is PEG-20 Dilaurate in beauty products?
PEG-20 Dilaurate is a synthetic ingredient that acts like a bridge between water and oil. In your moisturizer or cleanser, it stops the formula from separating into watery and oily layers, so you get a smooth, consistent texture every time you use it. It's part of the PEG family, which are compounds made from petroleum that are processed to be gentle on skin.
What does PEG-20 Dilaurate do in a beauty product?
In a cosmetic formula, PEG-20 Dilaurate sits at the boundary between water droplets and oil droplets. Its water-loving (hydrophilic) end dissolves in water, while its oil-loving (lipophilic) end dissolves in oil. This reduces surface tension, allowing the two normally unmixable liquids to form a stable, creamy emulsion that doesn't separate.
Is PEG-20 Dilaurate safe for most people?
PEG-20 Dilaurate is considered safe for use in cosmetics at typical concentrations. The main safety concern is potential contamination with ethylene oxide or 1,4-dioxane during manufacturing, but high-quality suppliers remove these impurities. It has low skin irritation and allergy risk for most people.
Who should be careful with PEG-20 Dilaurate?
Individuals with known sensitivity to PEG compounds or very reactive skin Those seeking 100% natural or petroleum-free skincare routines
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.